REMOVAL OF GREASE SPOTS AND STAINS 169 



To remove grease by capillarity, place a cloth or blotting 

 paper under the goods, cover the goods with paper, and press 

 with a moderately hot flatiron. Heat weakens surface ten- 

 sion, and the grease, after melting, moves away from the iron. 



Pitch, gums, shellac, rubber, and cement may be dissolved 

 by the same solvents, except ammonia water, as were used in 

 the removal of grease. Carbon bisulphide is most useful for 

 rubber. To remove pitch or other sticky gums from the 

 hands, use kerosene. 



Ink spots should have salt put on them at once. Then 

 they may possibly be removed by warm water. If this has no 

 effect, use lemon juice, and finally a 10 per cent oxalic acid 

 solution. This is a poison. Remove the oxalic acid by wash- 

 ing immediately in water. Red ink may be removed by 

 ammonia water or ether. 



Plaster can be removed from floors and baseboards by means 

 of hydrochloric acid, 10 per cent solution. 



Paint may be removed by turpentine or benzine. 



Iron rust may be dissolved by a 5 per cent solution of hy- 

 drochloric acid. Dip the spot into a shallow dish, containing 

 the acid, and then pour on some ammonia water to stop the 

 action of the acid. Delicate fabrics will not stand this treat- 

 ment. Lemon juice and salt should be applied, in this case, 

 and the article be placed in the sunshine. * 



Reference : 



1. 1710:93-96. Cleansing. 



Experiment 64. The Removal of Stains. 



Apparatus: Beakers, evaporating dishes. 



Materials : Pieces of cloth, 4" X 4", any grease, ink, paint, 

 pitch, gasoline, benzine, kerosene, turpentine, alcohol, ammo- 

 nia water, oxalic acid, 10 per cent, hydrochloric acid, 5 per 

 cent. 



